Electrically-operated coal-hoist.



No. 873,312. PATENTE@ DEN. 11.0, wo?.

- G. T. HENDERSON d; N. 1 HANSEN( ELEGTRIGALLY PERATED CAL HSL APPLICATION FILED JAN. 15, 1906.

SHEETS-SHEET 1.

PAT'NTEE DEC.. l0? 1,907. C. T. HENDERSN cz N. C. BASSET.

ELECTRIGALLY OPERATED GOA@ HOIS'L K APPLIOATION FILED JAN. 15. 190e.

4 SHEETS-SHBET 2.

A Aix No. 873,312. ETENTD DEG. 10, 190'?. (LT. HENDERSON & N. C. BASSETT.

ELEGTRIGALLY OPBRATD COAL HOST. APPLICATION FILED M1145, 190s.

4 SHEETS-SHEET 3.

No. 873,312. v PATENTED DEG. 10, 1907.

` G. T. HENDERSON 51; N. G. BASSETT.'

ELBCTRCALLY GPERATED GOAL HUIST.

APPLIOATION FILED` JAN. 15. 1906.

4 SHEETS-SHEET 4.

X; im

To all who'miit may concern:v

' UNIIVED sTATEsYIJArENT OFFICE.

cLAaKjr. HENDERSON, or rrrrseuae, PENNSYLVANIA, A ND NORMAN c'.` BAssErr, or MIL Wannen, wIscoNsIN, AesrcNoEs To TIIE cortan-HAMMER MEG. co., or MILWAUKEE, wIscoNsiNa conroaaTIoN- or wIsecNsnx'. f

y ELEGTRICALLIYPERTED COAL-HOIST;

No. s733512:

Be it knownthat we, CLARK soN, a citizen of the United States, residin atlittsburg,` in the county of Allegheny an ,2 State of Pennsylvania, and NORMAN C. BAs-l SETT, a citizen of the United States, residing at Milwaukee, in the county of .l\/lilwaukeevv andl State of.Wisconsin, have invented new and useful lImprovements in Electrically-- Operated CoalLHoists, of which the following is a full, clear, concise, and exact description,

reference beinghad to the accompanying.

drawings, forming a part4 of this speci'iicw tion. 11"

whereby power may be transmittedfom ya suitable driving e ement' to any desired driven mechanism in an efficient and ecc-l nomical manner. y l In accordance vwith ourl 1nvent1on`, we employ a plurality of 'magnetic clutches or ac celerators which are interposed between the driving element and the driven mechanism, these clutches being constructed and arranged for operation so that the load may be readily connected with 4the driving element and efficiently operated in connectlon therewith. Essentially the ma neticclutches or accelerators preferablyuse y by useach'com- `prise a primary or' inducingl member and a secondary or Induced member, -one ofwhlch is adapted to be connected with the driving element and the other withthe drivenmechanism. .Through the energization of the clutch, the driven part thereof may be caused ing and driven parts to. be forcibly gripped'` and clutched' to ether, but on the contrary, the driven mem er is radually accelerated in speed until eventual y it is brought to the full speed of the'driven part, if desired. This gradual acceleration is accomplished prine cipally for two reasons: First: Because the Specification of Lette-rs lPater-1t.y Application sied ,January iaiaeav 'serai 'N o. 296.172.

HENDER-vr Our invention ,relates to m'a, ,'netic*clutch*r powertransmitting apparatus,one of our ob 4jects. being to provide animproved means' Patented Dee. 1o, 1907.

' "clutch is so constructed that considerable in- -ductance is developed' therein, so that the 'energi'zln lcurrent does notfbring the ma netic fiel to full strength immediately, as 1s the'jcase Withtheordlnary-ring ty e magnetic clutch, butv causes the strengt of the magnetic field lto gradually increase until it reaches its maximum thereby 4exerting a gradually increasing torque upon the driven member. Second: Because vthe combined inductional .and frictional'eii'ect `upon the driven member 4caused the drivingy member toexert. upon the driven member a torque' i ual acceleration. .l 'f l I v Another object of lour present invention 1s to provide a device vfor controlling largeclamshell buckets for unloading and;distributingl 'coalZ ironore or other material. ',IIn the operation of a clam-shellbucket, i'tis` customary to use4 two independent ropes', lor cables,

Wound upon two Independent drums,the lcables belng attached to the buc'ke'tf-fn such ever, to lift and also to holdv the bucket when the load isvdro ped, a. second'cable ,is con'- nected to the ucket,y whichis fastened to the main frame of 'the' bucket, and when the samefis raised by the closing cable, it is cus-l tomary to assist this cableby the main bucket cable. This is done b starting the second `'winding drum upon w l'ch the main bucket cable is wound, which takes up the slack of the main cable and assists the closing cable in raising. the bucket.,4 The mechanism, however, 1s so arranged that thebulk of the strain will be kept upon the closing cable, thereby making it impossible for the bucket to o en and drop its load. "When it is deywhich is'so proportioned as tofcause a gradsire to dump the load, the closing cable is released so that the main'cable takesthe entire weight of the bucket and the `clam-shell covers of the bucket are free to open by their own Weight' and allow'the load to dump.

By our invention we are" enabled to operate coal buckets in the above described manner automatically, and in such manner that Fig. 4 is an end elevation of the clutch used the load cannot be accidentally .dumped through the failure of current., careless or ig- Av.'norant handling or through other causes. While we have described our invention as `A'Figure' 1 .is .a plan viewy same to the motor;Fi

clutch lbeing shown in section; ace view of the field member ofthe" clutch;

being applicable for 'operating vclam-shell bucketst will be understood that this, is

only' .one 'of several uses to whichthe same may be put as there'are various' other places' in which the invention may be used to .ad-

vantage. l

' We haveillustrated our preferred manner of'constructing thedevice in theaccompany-A ing drawings, lin which,

of the h oisting drum and the clutches `for connecting the of our improved controller for controllin the i' j-operation ofthe device, takenon the ines 2 2 of .Fi 3; Fig.` 3 is a sectional view of thecontrol er taken on the line 3-3 of Fig. 2

in' 'connection with our. invention, art of said v1g. "5 '1s a and, Fig. 6 is a diagrammatic view of the circuit arrangement of our device. l

In the preferred' manner` of constructing our'invention in suitable bearings or-sup- -A ports 1, a shaft 2 is Imounted hav1ng rotataly mounted thereon, winding drums 3 and 4 upon which are adapted to be wound thel cables attached to the bucket.- In suitable bearings 5, 6, 7 and 8 is mounted an extension 9 of the shaft of the motor 10, a braliegplley 11 controlled by a solenoid, belng ed upon this shaft at an intermediatepoint. lAlso carried upon'l the shaft- 9 are two clutches 12 and 13, the armature members 14 and 15 of which arerotatably mounted upon the shaft 9 and have secured thereto l pinions 16 and17, adapted to mesh with equivalent material.

` wardly projecting polar projections 24 and the ring 23 carrying outwardly extendingv polar projections 25, the two sets of poles be- `lng arranged in overlapping positions and held. against the back plate 20, by bolts or screws 26. The space between the pole pieces is illed with a nondnagnetic material 27 which may be Babbitt metal or other Afl annular Vchannel is provided in the face of the back plate 29 and this channel with the rings 22 and 23 when placed together form an annular channel for the receptionof' d. -2 isa sectional View the annular winding 28 of the clutch.

surrounded'with iron, thus creating a lar e amount v'o:f.inductance, establishedwhen t e current 4through .the coil 4is vcompleted, and the current through the ener 'zing coil and, consequently,` the strength o the magnetic held', vwill increase slowly, preventing sudden acceleration of thedriven member of' the clutch. Furthermore, the` 'arrangement ofl the outer and inner rings 22 and 23` rovdes a field ma etwhich 1s subdivide into a lar e num er of smaller magnetic elds, which .oppose each other,and cause the residnal'inagnetism to disap ear more rapidly than would. be the case '-a single magnetlc this arrangement, the exciting coil is entirely I l circuit were employed.'A 'This causes the clutch tov release rapidly Vwhen the current has'been shut ofi from theenergizing coils;l

The armature member comprises a flexible disk 29 secured at its inner end to the hubA 30' formed integrally with the gear 16, and has mounted thereon a circular plate'31 forming e thearm'ature member of the clutch. This.

plate, it willbe noted, is onlysecured tothe ilexible d iskvatits outer end by the bolts32, whereby aV sufficient play is permitted the armature plate, land due to the resiliency of the spring plate 29 when the amature plate' is released by thefdnergizationnf:the coil 28, the amature plate will Vassume -the position shown in Fig. 4. lSuitable conductors, as 33, are connected with the Winding 28 and with thecontact rin s 34 and'35, mountedl .upon the hub 21 an f su plycurrent. to the energizing winding, brus es connected -with support 36.

Our device for controlling the motor for operating the winding drums and for controlling the clutches comprises a novel con- I,the supply circuit, .being provided upon a struction of controller and we have illus' trated the same in our Figs. 2 and 3 of the drawings yIn the preferredconstruction of our controller, u on a suitable base 36, is mounted a cylin rical casting 37 having secured theretoin any suitable manner heads 38 and 39 to'orm an inclosing casing for-the respective parts of the controller. Secured within thiscasting is a plate 40 of soapstone or other insulating 'material mounted in position upon radial arms 41 secured at their outer ends to the casting 37. A'shaft 42 passes through the casing being supported by tho hu`b41aon the arms 41 cast with Vthe casting 37 and has mounted thereon a loose collar 43. Looselyv mounted upon-the collar 43 is a master arm 44 Aupon one insulated end of which are carried'brushes 45,- 46, 47 and 48 adapted to sweep overcontactsegments 49, 50, 51 and 52 respectively mounted upon the plate 40, The brush45 is also adapted-to make contact with the-contactbuttons 53. The opposite end of the master arm 44 is connecte by a link 54, withl a foot-lever 55-pivi. 'of thefootlever 55 has connected thereto,:

. and the shaft.

one end of a coiled spring 57, the other end of the spring, being connected to the base 36 and serves to normally 'hold oneend ofthe lever in a, raised position. Also mounted upon the tubular shaft 43'is-an arm 58 which is keyed thereto' and adapted 'to rotate' there-' with. y The arm -58 carries contact brushes 59 and60, the brushv 59- being ada ted to sweep over the contact segment 61' an the brush 60 being ada' ted to contactwithbutto'ns 62. Thisfarm 1s adapted to be moved in one directionvby a' projection 63 formedl upon the n v y .13 is,r connected by-coniluctor 101 with the supply mainj85, the other terminall thereofarm 44. A second arm 164 is mountedupon the shaft 42 and is ke edthereto by apin 65,

which passes ,throng thehub of sa1d 'arm The arm 64 carries brushes 66 and 67 which are adapted to sweep 'over contact scgnient68 and contact buttons 69, respectively. A lug70 also formed uponfthje I arm 44 is adapted to engage the arm 64 and move the saine in one direction., In. order; that the erms 58 and 64 will remain 1n any if Aosition to which they are moved andnot be y ]a`rred out of position, segments 71 and 72 are U 'mounted upon 4the plate 40"which are en-A gaged byprojcctions 73 and 7 4, `carried upon` the arm', whereby, due to thefriction between these parts thc arms are heldin any position to vwhich theyT may be mcved.. v Upon the ends of the shaft which project through the casing are suitably mounted hand levers 7.4` and 7.5, the lever 74 being keyedto the shaft 42 bvv -the pin 76 passing through lthe* hub of sai lever andthe shaft, andthe'l'ev'ferfl 75' beingkeyedtothe hollow 'shaft 43. "Suitable handlcs`77 and 78 are mounted uponthe levers 74' a1'1dv 7,5 to enable' the opera'torft readily mcvethe levers to theirrespective' lpositions.. It will be noted tha'tby the arrangement oi'ithe lugs 63 and `70when `the free end ofthe foot-lever is depressed and the armmovedfin a clock-wise direction, the

arms 58 and 64 will also be moved in thev saine direction, but when thefoot is removed from the 'reevendfof the lever 55, and the' saine permitted to return to its nornal posi-. tion, moving thcfarm 44 back to its normal position, the'arms 58 and 64 will remain in' the position ltofwhich they have been moved until their position is changed byv operating the levers 74 and'75.

t The motor 10 used in connectionwith our device 'is preferably ofithecompound-type,"

having an armature 7 9 ,.-a'series field 80,- andv a? shunt field 81. One terminal ofthe armavture of themotor is connected by a conductor 82, through the series field 80,'Wi'th1one side of the pivoted switch 83,- acontact' 84 oly this switch being connected with oner'nain 85 of the supply circuity This switch isop-9 eratedbya solenoidi86: lTheopposite Iter-- `minalfoffgthe armature is'connected'fb" conductor 87'," through the .resistance 88 wlth the contact 89 ofy a pivoted switch 90, vwhich is connected by the conductor\91.with the main '92 ofthe supply circuit. The lcontactfl of 'the 'controller is connected'by the conductor ,'93 through the safety switch 94 and by conductoi'V 95,' through the 'winding of thesolen# oid. 96,3vhic'hoperates' the switch 90, by fconductor 97,l through ithe winding 'of the solenoid,` Which/.operates the switch 8,3,

with the supply main `85.- A lbranch"circuit is establishedfor the shuntieldfrom'the conductor82- by conductor-98and conductor 99,

across the'switchQO t'o the supply-f-main'92.

One terrninal'ofthe windings ofthe'clutch bein connected by conductor` 102,-with the last utton of the contact buttons: 69 ,f which are connected with sections of a resistance 103.1,0ne terminal of the winding of the clutch 12is connected by conductorf104 with the supply main 85 and the'other'terminal'v thereof'` is connected by conductor 105 with -theflastl `"button of the contact'buttons 62',

Which'a'reconnected with'sections of al re .sist'ance106.`\l- The contactsegment'l'is con! n nected byfconductor 107, with the-supply A, y main l92y and the lcontact segmentc 68 is con-A -fnected by -conductor 108, with the i'jsupplfy main 92.* yFor starting the motor, a' sel the movable arm' 110, adapted'to-.sweepA over and'make contactwith the contactsegments, i1=11;,f112," 113,. 114 and 115, which contacts are connected', with the solenoids 1 16, 1 17, 1

'95 -startin fdevi'ee i'sused, comprising xa solenoid j109, w ich isv mechanically connectedwith rtors,"`121I,.122, 123, =124, and- 125 respectively.;'.'Theopposite'terminals of the solen-A "oidsA 116 to 120 are connected'byconductors turn is.. connected Withthe supplymain 85. Thev hubpfthe-eont'roller arm 110,44 has con- -nectedi between the" saine andthe contacts- 111 `t`o1115, aseries of resistances 132l to 136" respectively. Thel -movable element-110 is l connected by conductor v137 withy the contaot' button- 53' on the controller," the contact 50 of saidcontroller being connected'by conductors 138 and-108 withthe supply main-92.

`The"solenoidsnl'l.to 120 eontrolafseries of= pivoted 1* switch arms '139; to -143'respectively Vwhich are connectedjwiththe conductor 99 and fmake contact jwth' the" contacts 144 toy 148 respectively. fBetweenthe contaots'145 i ytoy 148 `and the conductor 87 are respectively 'i connected la series-of-'resistances .149;tol 152,.' v respectivelyy''whiletha` Contact'v 144' 1s connected with f thev 'cohdiictor 87f'by conductor j 126 to 13'0withthel conductor 131, which lin to make contact. with the contact 51. t Cir cuitis then closed from the main 92 by conductors 108, and 138, to contact 50, across the arm 44 to contact 51, thence by conductors- 1'54 and 105, through the windings of the clutch 12 and conductor 104, to the opposite supply main 85. Thus admitting full current to the winding of the clutch v12. 4 A further movement of the lever causesA the Abrush 48 to make contact with the contact 52 and a current is then admitted from the contact 50 across the armp44 to contact 52,

' to the opposite supply main 85. The shunt iieldcircuit may bealso' traced from supply main 92 across switch 90 by conductor 99.

through shunt iield winding 81 by conduc- 'tors 98 and 82, across switch 83 to supply main 85. This causes the motor to start and operate slowly with the resistance 88 connected in circuit. A still furtherI and iinal movement of the arm 44 will movethe brush 45 into contact with the button 53, whereby full current will be admitted to the winding of thesolenoid 109, this circuit being traced from the` Contact 50, across the arm 44 to contact button 53, thence by conductor 137 across the switch 155 through the winding of' the solenoid, thence by conductors 1'56 and 131 to thel opposite supply main 85.' The winding of the solenoid 109 being'energized,

it attracts `its core and moves the arm 110` slowly over the contacts 111 t`o 115, the arm iirst making/contact with the contact 115, short circuiting the resistance .136. of the magnetvv 120' ands permitting suiiicient current to -pass through the same to operate the switch 143. This closes an additional path` through the resistance 152 for the current to iiowv to the armature l79 of the motor decreas- -ing the ohmic resistance of the resistance 88 and thejmotoraccordingly builds up speed.

. As the arm 110 continues to move over the` remaining contacts, theresi'stance 135,' 134 and 133 of the solenoids 119, 118l and 117 are -shortkcircuited and sufficient current is'permitted'to pass through the windings of the solenoids to operate the switches 1.42,-- 141 and 140 to close additional paths through the resistances-151,`150 and 149 for the current to ilow tothe armature 79 further decreasing the. ohmic resistance/of the resistance 88 causing the motor to further lncrease This lcircuit may be tracedA its'speed. When' the arm 110 finally rests on contact 111. theresistance 132 of the magnet 116 is short circuited and the magnet operates to close the switch 139' andno external resistance remains in'the motor circuit, so that the motor attains full speed.

As the arm 44 is moved to start the motor as above described the larms 58 and 64 by the'engagementfof the lugs mounted upon,

the arm 44 are also movedv and when lthe brushes 59 and 60 Vcarried on the arm' 58v make contact with the contact 61 and the iirst 'of the buttons'62, circuitV will be closed from the supply main 92 through the con'` ductor 107, contact 61', arm 58, resistance 106,

conductor 105, through the windings of the clutch 12, and by conductor 104, back tothe supply main 8 5. This circuit, however, Willhave no effect upon the windings of the clutch as it will be remembered that full po tential has already b een admitted to the coil. The other arm 64 will also be moved and when it reaches a position where the brushes 66 and 67 of said Iarm rest in contactfwith the contact 68, and the iirst of'the contact buttons 69, circuit will be closed from' the supply main 92, through conductor 108, to

.the contact 68, across the .arm 64, tothe first oi the contact buttons, through'the resistance 103 by conductor 102, through the 4windings of the clutch 13, and by conductor :101, back to the supplyr main 85.. the

arm 64 sweeps over the contacts,.itfinally cuts out the resistance 103 inr4 the circuit of the clutch 13,` and this clutch-is ener -'ze'd as fully as the clutchh12, wherebyathe 'oisting drums will both be operating. vThe arms are moved byv the movement of the'foof- 'v lever until the motor has attainedits `highest speed and/they have beenmoved to their extreme positions.v With the arms in this position t re motor is operating at full speed and both clutches are energized to raisey the bucket.' In event it is desiredto stop lthe bucket the operator removes his foot from the lfoot lever 55, which permits the ar1n'44to' the motor circuit and stopping the same, and opening the circuit thraugh the windin' of the clutch 112 by conductors 154, 105 van -104. The arms 58 and 64,V however, remainy inv the position to which they have'been moved and though the circuit to the Windings of clutch 12 isopened by wayof contact 51, it remains closed by way of contact 61, so lthat the windings of both clutches are fully energized andthe bucket is held inthe pos-itionit has :reached when the motor is stopped, `To lower the bucket, the levers 7 4 and 7,5 aremoved in a counter clockwise ,direction which movesthe yarms 58 and .64 and the ,move back to its normal position .opening resistances'103 106 arefinserted in circuit with' the windings of the clutches-whereby the weight of the bucket will overcomethe strength of the clutches. and the bucketiwill oids,.a movable-element, anda solenoid for -operating said movable element to succes-l-l be lowered. 'y By controllingthe amount of f lstopped at the position desired. To dump the coal, the operator moves the handle 75 in a counter clockwise position. which moves the arm 5S to the full foff position,' de.- energizing the clutch and permitting the bucket to open.

Having thus described your invention what we claim as new and desire to secure by Letters Patent, is: l

l. The combination witha motor, of a lurality of resistances arranged in paralle in the circuit thereof, a plurality ,of switches controlling said resistances,l a plurality of 'solenoids for operating said: switches, and means for automatically andv successively admitting 'operating current to said solenoids.v

2. rl `he combination with a motor, of a plurality of resistance's arranged'in parallel in the circuit thereof, a plurality-of switches forv controlling said resistances, a plurality of solenoids for operating said switches, a plurality of resistances inthe circuits of said solenoids, and means for automatically and successively cutting out` said solenoid re" s istances.' y

3. The combinationwith a motor, of a plurali-ty of resistancesarranged in parallel in th'e circuit thereof, a plurality of solenoids for controllingl said switches, a plurality of' resistances in said solenoid circuits, a movable element, and means for automatically operating said movableelement to cut out said solenoid resistances successively.

' 4i T he combination with amotor, v4of a plurality of resistances larrangedy in parallel in circuit thereof, a plurality'of switches for controllin said. resistanc'es, a, plurality of' solenoids or controlling said'fswitches, alurality of resistances 1n"circuit with said so ensively cut out said solenoid resistances.

5. `The combination with a motor, of a lurality of' resistances arranged in paralle,`

the motor circuit', a plurality of switches for ycontrollin said resistanees, anelectro-responsive evice for operating each of said switches, means for automatlcally andsuc.-

cessively admitting operating current to said device, and van automatically operated switches, a plurality of resistances in clrcuit with saidl solenoids, a I novable 'elemennaf soleno1d-for operatlng said element yto cut', out said' solenold reslstances successxvely,.

and a pluralityl ofv electricallyy o erated switches for controlling themirc'uitt rough f ymotor su 7. The combination with a motor, of a lurality ofresistances arranged in paralle in circuit thereof, a pluralityp trolling `said resistances, a plurality of sollenoids for controlling said switches, a lurality of resistances in circuit with said so enoids, a movable element, a solenoid foroperating said element to successively cut outl said' solenoid vresistances, 'a plurality of switches for controlling the circuit through said motor, a plurality of solenoids for operating said switches, and means `for closing the' circuit through the solenoids controlling the motor circuit switches and through the solenoid for operating said movable element. v v f n 8. The combination with a motor, of a starting device therefor, com rising a movable element, and a solenoi for operating said movable element, a plurality of clutches adapted to beoperated bythe current in the ply circuit for connecting said v motor wit the mechanism to be driven, and a device.for controlling the circuit through said solenoid and through said clutches, said device including means for regulating the strength of the currentthrough the clutchwin'din s.

9. T e combination with a motor, of a starting device therefor, comprising a movable element and asolenoid for operatin the same, a lurality of switches' for contro in the circult through the motor, a plurality o solenoids for controlling said switches, a lurality of clutches adapted'to be'operate switches for conby' the current in the motor sup ly circuit for 4connecting said motor with t e mechamsm to bedriven, and ay device for controlling the circuit throu hsaid solenoids and said clutches, said device including means for re ulating the strength of the current throu the clutch-windings. l ,#10, Thelcombinationwith a motor, of a plurality of clutches for connecting the same with the mechanism to be o` erated, a controlling device having means or starting and stopping said motor, and means for controlling the circuit through said clutches, means 4wherebysaid clutch controlling means'and motor controlling means lwill be simultaneously operated tol start the lmotor and close the-circuit thrpiigh said clutches and said clutch controllingmeans may be operated to control the circuit,-- throug-h the clutches l after themotor has been stopped.

f11.'Thecombination-with-a motor, of a -pluralityof clutches forconnecting the same lwithfthe mechanism to be oy erated, resistancesgin. 'circuit with said c utches, a con- .trollmg device havlng' means for starting said 'motor, and meansforzcontrollin'g the clrcuit 'through said. clutches, means for simultaneand sai clutc controlling means 'to start `ouslyl 'operatin said motor starting means trolling device havingrneais for startingthe r motor, and means for controllin the circuit'. ""e'ans w iereby.f 's'afidJV `*will begfjop' eratedxthrough said clutches" clutch controlling n with said means iorjst the motor .when the motor has started," A illlie unaffected by said motor starting de ce, when'thesame is operated to stop thelfltor; f

y13. The combinationfwith a nmtorfof aV plurality of clutches for cnnecting'theisame with the mechanism to beoperated, of a 'con-I,

trolling device having means for startingithe motor, and means for controllin thexcircuit through said clutches, means W ereby saidclutch controlling meansv Will be operated ated independently when said motor starting l means is in a vposition to stop the'motor.

14. The combinationjwith a motorfof a plurality of clutches for connecting the sa'me with the mechanism to be operated, a controlling device having a movable element for starting andl stopping the motor, amovable `element forcontrolling the circuit through one of said clutches and a second movable element for-'controlling the circuit through vthe other of said clutches, means -whereb all three of these movableA elements W. be

moved in unison when the motor cont-rollin element is operated to start the 1notor,1an

. means whereby the clutch controllingmovable elements may be operated independf 40' ently of the motor: controlling `movable element and of each othervvhen the vcontrolling movable element isinjaposition to stop the 15. Ina controllingdevicc, thecombination With a plurality: of: movable elements, of

means whereby When'onfe of said elements is moved in one direction, the 'remaining mov"- able elements Will be'mo'ved therewith, means Wherebywhen said first "mentioned movable 5,0 lelement is moved in an opp osite direction, the remaining movable elements will stay in the position to Which they have been moved and may be moved toa new position independently of said first mentioned movable element and of eachother.

16. The combination With'amotor, of 'a plurality of magnetic clutches for connectin l the motor With the mechanism to be operated and. means for controlling the circuit of each clutch operative independently of each other, and regulatingthe strength of the current through the clutch-windings'.

17 p The combination With a plurality of magnetic clutches, of means forV controlling the circuit of each clutch, operative independentlyof each other, and means for operat said controlling means for closin the D circuit to the clutches at substantially the.

same time.

18. The combination with armotor, of a plurality of magnetic clutches for connecting the motor with the mechanism to be operated,

ofV a `movable element for controlling the circuitlthrough each clutch, .operative indeypendefn'tly of each other, and regulating the 75 strengtllof the current Vthrough the clutch- Windings.,

19,; The combination with a plurality of clutches, of amovable element for. control- .ling the circuit through each .clutch opera- 80 -tive independently of each other,and means for oliieratingl said movable elements Vin one direction munison. A 2O,4 The combination with a motor, of a plurality of magnetic clutches for connecting y the same with the mechanism to be driven, conjointly Withusaid 'motor starting means when the motor'is started but may be oper-s means lfor controlling the circuit of each clutch operative independently of each other, and an arm or lever for operating said controlling means in unison.

21. The combination with a motor, of a plurality of magnetic clutches for connecting the same with the mechanism to be driven,`l aplurality of means for controlling the circuits of said clutches operative independently of each other,' and means for operating said controlling means in unison.

22'. The combination With a motor, of a plurality of magnetic clutches for connecting the same with the mechanism to bedriven, of' a movable element for controlling the circuit of each of said clutches and movable independently of eachother, and means for moving said movable elements in' one direction in unison.

23. The combination with a motor, of a" plurality of magnetic clutches for connecting the same with the mechanism to be driven7 aplurality ofcontrollin means for controlling the circuit-of said c utches operative in- 110 dependently of each other, means for operating said controlling means in unison, and a controlling means for said motor.` 24. The combination Witha motor, of a plurality of ma netic clutches for connecting the same with t e mechanism to be driven, a plurality of controlling means 'for-'controlling the circuits of said clutches operative inde.-

endently of each other, a controlling means or said motor, and means whereby when the same with t e mechanism to be driven, a

plurality ofl movable elements for controlling the circuits of said clutches yoperative 4indenendently of each other, amovable element "4 i for contrf'illing'said motor, land means ,where-v4 by all of said movable elements willbemoved in one direction in unison.

' 26..'The combination withaJmotor, `of av plurality of magnetic-clutches 'for connecting the same with ,the mechanism to-be driven, a

plurality'of movable elements for controlling the circuitsof said clutches, a movable element for controlling said motor, means whereby said movable elementsjwill be moved in onedirection in unison, and said movable element for controlling' the motor may be o y erated in ya reverse direction independent' y of said clutch controlling movable elements.

27. The combination'with a motor, of a starting device therefor, comprising a movableelement and a solenoid for operating the same, a plurality of vmagnetic clutches for connecting said motor with the mechanism to be driven, a movable element for controlling the circuit through said solenoid, and a plurality of independently operative movable elements for regulating `the stren 'thof the current through` thewindings o said clutches. 1

28. The combination with a motor, of a starting' device therefor, comprising a mov# able element of a solenoid for operating the same, a plurality of magnetic clutches for connecting said motor with the mechanism to be driven, a lurality of independently operative movab e elements for controlling the circuit through said clutches, a movable ele' ment for controlling the circuit through said solenoid, and means whereby when said solen- 'oi'd controlling` element ismoved n'one di-` krectionthe clutch Y controlling elements will be moved therewith.

.29. Theeombinaion 'with t maar, of a 'plurality of parallel paths V'arranged in thecircuit thereof of comparatively high resistance and a sir'igle' path foi-comparatively low re-v sistance, ra pluralit ofgswitehes controlling said paths, a plnra ityosolenoids for oper-4 ating said switches andm'ean's for automatically and successivelyadrnitting operatingy current to said solenoi'ds. y. v

30. The combination with a motor, of a plurality of parallel Y aths in the circuit thereof of com arative y high resistance, and a single paral el pathv of comparatively low resistance, a plurality of; switches Jfor controlling said paths, a plurality of solenoids for operating said switches, a plurality of resistances. in circuit of said-solenoids, and means. for automatically and successively cutting out said solenoid resistances.

In witness whereof, wehave hereunto subscribed our names in the presence 'of two witnesses. 

